Its weird your having contractions with your first cuz with my first I didnt feel nothing til I went into labor and now I pregnant again and I have so many contractions! I started getting them at 20 weeks and i got a shot also now they just come and go If I get them bad Im supposed to take terbutaline. I went to the doctor last tuesday andI was having them on the stress test and they always just disapear! Good Luck With your first!!